Does Colloidal Silver Expire?

Whether you’ve heard of colloidal silver before or not, if it’s been recommended to you as a form of treatment, then you probably have a whole host of different questions to ask about this natural medicine.

Does Colloidal Silver Expire?

However, one of the questions that many people who are new to using colloidal silver ask is whether or not it ever expires, which is a good question. 

So, if you want to find out more about colloidal silver, like what it is, how it’s made, and whether or not it every expires, then you’ve come to the right place, as we have all of the information you need to know about this incredible natural medicine so you can decide whether or not it’s right for you!

What Is Colloidal Silver?

If you don’t know what colloidal silver is, then you should definitely learn more about it, as it’s one of the best natural medicines out there, and has a wide range of benefits that many people aren’t even aware of! 

Colloidal silver is essentially an antibacterial mineral solution, which is made up of silver ions, alongside tiny charged silver particles, all of which are suspended in a pure and distilled dispersing medium, which is usually water.

Since all of the particles inside of the medium have the exact same electrostatic charge, it means that they repel one another, and therefore maintain an even distribution throughout the medium. 

Does Colloidal Silver Expire?

You’ll be glad to know that colloidal silver very rarely expires (Check out Does Colloidal Silver Go Bad?), and only under certain conditions, which means that if you buy a bottle of colloidal silver for yourself, you won’t have to worry about whether or not it has expired when it comes to using it, even if it has been a while since you initially purchased it! 

Does Colloidal Silver Go Bad Unopened?

If you leave your bottle of colloidal silver unopened, it will never expire, and there are only two real exceptions to this rule.

The first being is if you decide to freeze your colloidal silver, which will turn the distilled medium into a solid, and the particles that were previously suspended will no longer be suspended, and will therefore be a colloid, essentially causing it to expire. 

The other exception is the presence of other metals, which are known to have an adverse effect on the colloidal suspension inside of the bottle.

A bottle of colloidal silver will typically appear to be a dark blue to grey color.

However, suppose you notice that it has become clear, and the previously suspended silver particles have fallen and begun to form sediment at the bottom of the bottle.

In that case, you should avoid using it, as it’s expired! 

Does Colloidal Silver Go Bad After Being Opened?

Once you’ve opened your colloidal silver bottle, you should have no issues with it expiring so long as you close the lid back down once it’s done.

In addition to this, there are a number of other precautionary measures that you should take in order to help prevent your colloidal silver from expiring. 

The first of these measures is not to drink directly from the bottle.

This is because germs can be transferred from your mouth into the colloidal silver solution and since most people use colloidal silver when they’re sick, it means the germs spread are more likely to be harmful.

Whilst things are not necessarily known to grow in colloidal silver, it is entirely possible that growth could occur on the lid, particularly if you don’t re-open the lid for some time. 

Ensuring that you replace the lid each time you use your colloidal silver is an excellent way to ensure that your bottle of colloidal silver doesn’t become contaminated by any nasty germs or bacteria, as well as using a cup or glass to drink it from when ill, instead of drinking it directly from the bottle should help to prevent your colloidal silver expiring prematurely too. 

Does Colloidal Silver Go Bad When Mixed With Water? 

It’s not uncommon for people to add some colloidal silver to their water bottles, in order to help them boost their immune system on a regular basis as they sip their water throughout the day.

Although many people would become concerned that this would cause the colloidal silver to expire, as it would affect the suspension of the silver. So is this okay? 

Ultimately, adding a small amount of colloidal silver to purified water shouldn’t lead to any issues.

However, you should be cautious about adding colloidal silver to a metal water bottle, as the metals can have an adverse effect on each other, so you should only add colloidal silver to water if it’s kept in a plastic or glass water bottle, which is what most colloidal silver bottles are made out of!

What Is The Shelf Life Of Colloidal Silver?

Ultimately, colloidal silver shouldn’t have a set expiration date, however, most manufacturers of colloidal silver will generally recommend that you use the contents of your colloidal silver bottle up within two years of its production date, or 6 months once you open it.

Although your colloidal silver will still likely be fine after this time, it’s strictly a safety precaution taken by manufacturers to ensure that they aren’t liable. 

If you’re ever unsure about whether or not your colloidal silver has expired or not, you should always err on the side of caution and purchase a new bottle instead, as consuming expired colloidal silver could be potentially dangerous! 


To summarize, colloidal silver is an extremely useful antibacterial solution, and for the most part, won’t expire without a form of outside interference.

However, most manufacturers will recommend you use up your colloidal silver within 6 months of opening the lid and breaking the seal, and you should always be sure not to consume any colloidal silver that you think may have expired! 

We hope this guide has helped, and thanks for reading!

Carlos Esteban